摘要：The protein boom has delighted the U.S. dairy industry, which is now selling record amounts of whey, a liquid by-product of cheese

学习外刊英语长难句，考研四六级雅思留学英语轻松过

请先精读下面句子，翻译，再分析句型结构：

The protein boom has delighted the U.S. dairy industry, which is now selling record amounts of whey, a liquid by-product of cheese making that was for decades managed as a waste product, spread onto fields and dumped into waterways, where it caused fish die-offs and algae blooms.

核心词汇：

句型及句子成分分析：

这是一个主从复合句，包含主句和条件状语从句。

1. 主句（主谓宾句型）：

The protein boom has delighted the U.S. dairy industry

主语：The protein boom

谓语：has delighted

宾语：the U.S. dairy industry

2. 非限制性定语从句（主谓宾句型）：

which is now selling record amounts of whey

主语：关系代词：which（指代U.S. dairy industry）

谓语：is now selling

宾语：record amounts of whey

3. 同位语：

a liquid by-product of cheese making

同位语：a liquid by-product

定语：of cheese making

4. 定语从句（主谓句型）：

that was for decades managed as a waste product

主语：关系代词：that（指代whey）

谓语3：dumped into waterways:

5. 地点状语从句（主谓宾句型）：

where it caused fish die-offs and algae blooms

谓语：caused

宾语：fish die-offs and algae blooms

参考译文：

蛋白质热潮让美国乳业欣喜若狂，该行业目前正在销售创纪录数量的乳清。这种奶酪制作的液体副产品在过去数十年间被当作废物处理：或被倾覆于田地，或被排入水道，导致鱼类死亡和藻类泛滥。

来源：傲珊教育